Shuttle



L. PAVIA May 3l, 1927.

SHUTTLE Filed 40611. 16, 1926 WITNESS Patented May 31, 1927.

UNrran STATES LUIGI PAVIA, 0F ALLE'NTOWN, PENNSYLVANIA.

SHUTTLE.

Application filed October 16, 1926. Serial No. 141,940.,

' In my Patent No. 940,271 a shuttle is setl forth in which thereisapivoted spindler split from its butt toward its? point and adapted, bymeans including a spring and converging surfaces in the shut-tlc body,to be expanded as to its split part so as to grip the bore of a copor'other wound package when the spindle is depressed in the shuttlel andto be collapsed' to release the cop` when the spindle is elevated. Thepresent invention contemplates certain improvements 1n shuttles of thisclass and concerned princi# pally with the pivoting joint of thespindle.

In Vthe drawing, Fig. 1y is a. plan of a shuttleembodying the invention;

Fig. 2 is a side elevation thereof, partly 1n vertical section;

Fig. 3 is a section on line3-'-3, Fig. 2; Fig. 4 is aV side elevationofthe spindle butt;

Fig. 5 is a section on line 5-5, Fig. 4; and

Fig. 6 is aplanof the spindle butt, partly broken away.' i

1 is the shuttle body, 2 its longitudinal spindle cavity, open at thetop side or surface of the shuttle body'as is usually the case, and 3 isa pin Vtraversing the reduced extension of this cavity at one endthereof, the pin affording in the present example the pivoting bearingfor thespindle; the pin may as usual be screwed into or otherwise fixedin the shuttle body.

The side surfaces of the cavity extension converge toward said side'(the top side) of the shuttle body, and one of these surfaces, 4, isperpendicular to the pin and the other, 5, inclined. These surfaces mayas shown be afforded by metal wear plates.

6 is the spindle; It is split fromrit-s butt toward its point to formtwo legs 6a andb.

As will appear, it is shiftable around the pin as a bearing so as tostand depressed in or housed by the cavity or in elevated or 4projectingposition. Between its legs is a spiral spring 7 and this spring` and theconverging surfaces 4, 5 ofthe cavity coact as means to cause thedesired expansion or collapse o f the split portion of the spindle when1t isshifted one way or the other around the pin .as a. bearing, forwhich purpose the side surfaces of the legs when the spindle 1sdepressed are best formed to converge upwardly, preferably by the sidelsurface of the leg 6a being perpendicular tothe pin and the'sidesurfacev of leg 6? being pitched at the same inf clinationas the surface5 of the cavity. y

In the present construction .only one leg,

6a, of the spindle has pivotal contact with the bearing (pin 9). VInshuttles of this class and particularly where the split of the spindleisangularly related to the bearing this feature is new in itself." Suchpivotal contact is, moreover, Apreferably' given lateral' extentexceeding the thickness oflsa'id leg,'6, as'by boring a holefin the saidleg andfiXingy therein, as with a ydriven lit, a small tube 8,

in the present example,v arrangedk to forma f.

projection at 'the inner side of the leg.

lThe other leg which it will appear has no pivotal contactiwith thebearing)-` hasy a hola 9 which receives vwith a sliding ht the tubeorprojection 8'; in ,otherword`s, the leg 6" is 1n effect slidingly'supported on the leg 6'@L .actual pivoting leg) vthroughv themedlumofthe part/8, which in e'li'ect'isV a dowel.y

r In the'Y elevating and ,depressing of'v the".

spindle-of my new construction herein'fset forth I avoid the screw-likeaction ywhich characterized the movement of each spindle legon thebearing of my old or patented construction, which in that case involvedboth v ,perpendicular to thebearing, since surface 4 lis itself` thusperpendicular. Thereforev I reduce the wear of the pivoting jointbetween the spindle and kshuttle body, in time resulting in the spindlebeing capable of undesirable lateral tilting.

Again, in the present case theV same extent of the bearing 3 transf*versely ofthe shuttle is availed of (by giving one leg, as 6a, alaterally elongated contact- -8-V with t-he bearing) to support the orless elevated as when it is depressed, which is anotherv factor tendingto reduce the wear of thepivoting joint. Y

Having thus vfully describedmy invention lwhat Il claim and desire tosec-ure by Letters Patent is :j l

1. In combination, vwith a shuttle body l 100- spindle againstlateraltilting when it is more having a longitudinal cavity and atransverse bearing, a spindle arranged in thecavity and split in'a planeintersectingthe axis of the bearingV from the lbutt toward the point ofthe spindle to form two legs, one such leg having pivotal contaot,yandAthe other being free of suoli Contact, with the bearing, and saidv bodyand spindle having coacting means to vcollapse or expand the split partof the spindle when tliesaine is 'l pivotallyshifted one Way or theother.

2. ln conibin'atiom Vrwith a shuttle body having a longitudinal cavityanda transverse bearing, a spindle arranged Viii the cavity and split ina plane intersecting the axis Vof the bearingffroin therbi'itttoward-the point of the spindle to form two legs, one suoli leo' havinO'aivotal contact Withlfthe D b I bearing and said bod' and soindle havingY b CJ coacting means, confining said leg to a given plane perpendiculartov said bearing when i the spindle Vis shiftedaround the same,tozcollapse or expand the split part of the spindle during` suchshifting Oneway or the other.

' 3. In. combination, with a shuttle body.

i having a longitudinal cavityindl a transverse bearing7 aY spindlearrangedin the cav-v ity and split in a plane intersecting the axis ofthe bearing rfrom thebutttoivard the point of tlie spindle to forni twolegs ,one

v such leg having a laterally elongated pivotalyeontact With thebearing, andY saidbody and spindle having eo'acting means to collapseorexpand the split part ofthe spindle When the saine is Way or the other.

4. lIn combination, with ashuttlebody pivotally shifted one 'having alongitudinal cavity and a bearing traversing the cavity, a spindlearranged in 'the'cavity and split, in a plane angularly related to thebearing from the butt toward the point of the spindle to lform tvvolegs,

one siicli leg having pivotal ycontact With v tliebearingaiid one legalso having a lat ei'ally projecting dow-el having a slidingiit thecavity and split in a plane angularly rev lated to thebearing from thebutt ktoward the point of the spindle to forin tvvo legs7 each euch legbeing penetrated by the bear-v ing and one having pivotal contaetthere-vwith and'avlsohaving a'latera-lly projecting tubular doWel concentricwith saidv bearing and having asliding fit in the other leg; aand.

said body and spindle having coacting means to expand or contract thesplit partgof the spindle when the saine is pivotally,shifted one Way orthe'other,

In testimony whereof I affix my Signa# ture. 9

LUIGI PAVIA.

